10.21: Mammal Reproduction Difficulty Level: At Grade Created by: CK-12 % Progress MEMORY METER This indicates how strong in your memory this concept is Practice Progress % % Practice Now MEMORY METER This indicates how strong in your memory this concept is Share Add to Library Turn In Read Practice Resources Details Loading... Notes/Highlights Having trouble? Report an issue. Color Highlighted Text Notes Show More Vocabulary Language: English ▼ English TermDefinition cloaca Single exit and entrance for sperm, eggs, and waste. marsupial Mammal in which the young are born in an immature state and continue development in the pouch. monotreme Mammal with some birdlike and reptilian characteristics, such as laying eggs. placenta Spongy structure that passes oxygen, nutrients, and other useful substances from the mother to the fetus. placental Mammal with an organ that feeds the fetus and removes waste products. sexual dimorphism Distinct difference in appearance between the males and females. Image Attributions Show Hide Details Description Covers the different kinds of mammal reproduction. Learning Objectives None Difficulty Level: At Grade Authors: Jessica Harwood Douglas Wilkin, Ph.D. Contributors: Doris Kraus, Ph.D. Niamh Gray-Wilson Jean Brainard, Ph.D. Sarah Johnson Jane Willan Corliss Karasov Editors: Douglas Wilkin, Ph.D. Tags: marsupial placental SCI.BIO.841.4.L.1 (2 more) SCI.LSC.841.4.L.1 sexual dimorphism Subjects: science Life Science Concept Nodes: SCI.LSC.841.4 (Mammal Reproduction) Grades: 7 , 8 Date Created: Nov 29, 2012 Last Modified: Aug 30, 2016 Vocabulary None Save or share your relevant files like activites, homework and worksheet.To add resources, you must be the owner of the Modality. Click Customize to make your own copy.